Refrigerating apparatus.



W. H. MANNS.

REFRIGERATING APPARATUS. APPLICATION FILED NOV. 16, 1909.

1,200,742. Patented Oct. 10,1916.

wi bvwweo run down the sides and adjacent parts, thus. placing the apparatus in-a bad condition and interfering materially with the process .;of freezing. ;Theobject'of my said. invention is to:

A To ell whom may concern:

In the foperation of surplus heat resultingfroml'the warming u jof thebrine from any occasional cause, such as the inserting of cans filled with warm a water; the gasthus generated causing a back tam . *Beiit known that I,'-WILLIAM'H. Menus,-

a citiien of the United States, residing at 1 Waynesbo 0, in the county of Franklin and State of ennsylvania, have: invented cer new an'duseful Improvements in R e- -"Ifrigerating Apparatus, of which the follo'wing.is a specification.

refrigeratingplant's employing what is comv -monly known "as thefflooded system much difliculty has heretofore been'experienced in securing satisfactory results on account of.

the periodical excessive generation of gas in the coils in. the -;freezing tank caused by ressurelin the coils and forcing the liquid aekward, which, seeking an outlet of'least resistance, -..passes up the liquid pipe leading 3 from the ammonia supply pipe to the accumulator into said accumulator, causing the same to overflow onto the apparatus and provide certain improvements in. the appa iatus whereby these difliculties will be over- :come and the disadvantage in the operation 'obviated, all as will be hereinafter :more

fully described and claimed.

Referring to the accompanying drawings .which are made a part hereof and on which similar. reference characters indicate similar parts, Figure 1 1s a diagrammatical view of.

a refrigerating, .or ice making, plant employing the flooded system, and Fig: 2 a detail view illustrating the construction of a check-.

representtheammoniagas compressors, B

- The distilled water storage gvalve forming a leading'feature of the con-' struction. 1

In said drawings the portions marked A the. distilled water storage tank, C the freez ing'tank and D and E the accumulators.

All of these parts. are or may be ofany approved construction and arrangement and needno speclal description.

tank contains 7 an ammonia liquid coil 5 connected with an i the header 10"antla' suction pipe 13 inlet headerflO and an outlet header. 11. The

ammonia liquid supply .pipe 12Ii'seonnected Specification of ietters'latentl Application filed November 16, 1909. Serial No. 528,410.?

ice making and In operation, the accumulation of I union.)

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Patented Oct. 10, 1916.

to the outlet header Asystem of pipe coils 6 for the ammonia liquid are also arranged in-the freezing tank each connected to an inlet header .14 and an outlet header '15. *A'branch 16 leads from the am monia liquid supply pipe 12 to, the inlet header 14 and a suction pipe 17'1ea'ds from the outlet. header 15 to the accumulatomD. Another suction pipe 18 leads from the accumulator I). and ,joins with thesuction pipe 13 leading frorn'the outlet header 11 p of the distilled water tank,-the two being connected by a coupling 19 containing a valve 20 by which the'pipe 13.may be cut off from the pipe 18,- A pipe 21 leads from coupling 19 into the accumulator D form ing a part of the suction system. The main suction pipe 22 leads from the top of accu-v mulator'E to the ammonia gas compressors 7 A, to which they are connected in the usual manner. A liquid return pipe 23 leads from the bottoin of accumulator E and is connected by a coupling 24with a branch 25 joined to the pipe 12 by a coupling 26. =A

frost indicator pipe 2.7 leads fromthe cou- F pling 24 to nearthe top of accumulator E. A I llquid return p1pei28 leads from the bottom of accumulatoi' D to a'coupling'29i'and a" branch 30 leads from said coupling into the branch 16 of the -inmnonia li quidsupply pipe, being connected thereto b y a coupling" 31." A frost indicator ,pi e 32 leads from the coupling 29 to near t e top of ac'cum-ff zulator D. Variousfvalves are provid dginthe various pipes for controlling the supply of liquid which are'unneces'sary to enumerjate being plainly indicated in the drawing. .In the branch 30 between the ammonia llqllld supply pipe 31 and the liquid return 9 pipe 28, leading from the accumulator D, I

have provided a 'check-valve 40, of any suit- I able construction, that shown in Fig. 2 being one that has been foundfldesirable for the purpose. A similar check-valve '41- is pro- 0 vided in the branch 25 between the liquid re-"f turn pipe 23, leading from the accumulator v ply pipe 16 and back to the coils by gravity,

through this channel into the accumulator. Such liquid as may be entrained with the gases through the header 15 and pipe 17 into the accumulator D will fall to the bottom of said accumulator and be returned through pipes 28 and 30 into the ammonia liquid supwhile the gas will pass through the suction pipes, before described, to the ammonia gas compressors,

The/same operation will take place in the distilled water storage tank.when for any cause the temperature of the -water is raised to cause any unusual gas generation, the

globules of gas will be compelled to follow the course toward the outlet header into the suction pipe and to the gas compressors. By this means the circulation of the ammonia liquid through the system is placed absolutely under control regardless of the variation in gas generation in the coils, caused by sudden changesin temperature and the operation of theapparatus can bemaintained uniformly as desired, without the interference therewith and the difficulties heretofore experienced as above pointed out.

lVhile I have described the invention as applied particularly to an ice making machine, it will be understood, of course, that it is equally applicable to any refrigerating or cooling apparatus employing the flooded system, such as bunker rooms, coils in cold storage rooms, etc.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an ice making or refrigerating ap-v paratus, the combination, of a water storage tank, liquid ammonia coils therein, a freezing tank, ammonia coils therein, an am monia supply pipe. connected to the inlet head of each of said coils, an accumulator for each of said coils, an outlet pipe leading from one coil to one accumulator, another outlet pipe leading from the other coil into the other accumulator, a gas outlet pipeleading from the accumulator of the freezing coil to the accumulator of the other coil, a suction pipe leading from said last named accumulator to the compressor, a separate liquid return pipe, leading from each accumulator back to the liquid ammonia supply pipe, and .a check-valve interposed in,

each of said return pipes between the liquid ammonia. supply pipe and the accumulator to prevent back flow of the liquid ammonia to the respecth'e accumulators, substantially I from said accumulator to a compressor, substantially as set forth.

In witness whereof, I, have hereunto set my hand and-seal at \Vaynesboro, Pennsylvania, this 29th day of October, A, D. nineteen hundred and nine.

WILLIAM H. MANNS. [L. s.]'

Witnesses: I

EZRA FRIoK, A. D. FRICK. 

